Condensing system for locomotives



C. E. SAYER.

CONDENSING SYSTEM FOR LOCOMOTIVES.

APPLICATION HLED JULY 22,1913.

1 ,42 6, 1 1 3. Patented Aug. 15, 1922*.

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To all whom it may concern: I

Be it known that'I, CYRIL Eusrnon BAYER, a subject of the King of GreatBritain, residing at 80 Foxley Lane, Purley, Surrey, England, haveinvented new and useful'Improvements in Condensing Systems forLocomotives (for which I have filed an appli cation in England April 20,1917, Patent Number 110,306), of which the following is a specification.

'This invention relates to condensing systems for steam locomotives ofeither simple or compound expansion and has for its object the provisionof improved means for continuously cooling the circulating waterutilized for condensing purposes and so en suring the maintenance of asgood a vacu um as possible.

In the accompanying drawing Figure 1 is a sectional side view of alocomotive and tender provided with a condensin system embodying theinvention.

igure 2 is a sectional rear view of the tender, and i a Figure 3 is afront view of the locomotive.

According to the invention I make use of a water cooler at arranged inthe tender Z) of the locomotive c, the said cooler consisting of aspiral coil comprising a large number of turns of sheet-metal. This coila is continuously revolved, by means of a belt d from one of the axlesof the tender and its lower partis immersed in the water 6 which is tobe cooled.

Owing to the motion of the locomotive the necessary flow of air throughthe cooling apparatus may be induced naturally, suitable inlet andoutlet ducts f and 9 respectively being arranged for this purpose.

The condenser h is divided into two separate sections arranged in aconvenient position one at each side of the engine 0 preferably abovethe fore part of the foot-plate at the side of the smoke-box so as toclear the driving wheels and to provide the shortest possible paththrough the pipes h for the exhaust steam from the cylinders into thecondenser.

In order to prevent the transfer of heat from the smoke-box to thecondenser casings and the impairment of the condenser efliciency whichwould result from the same I propose to introduce between the wall ofthe smoke-box and the condenser casings a heat insulator consisting of athicknessof suitable non-conducting material 2'.

Specification of Letters Eatent. Pg; tnt fl Aug-,1 15, 192 2,

1918. Serial No. 246,102.

The circulation of the coolingwater between'the condenser'h and thecooling -ap-= paratus a is effected through the j'flow and return pipesand by means of the circulating pump of centrifugal type Z the spin-,

dleZ of which is preferably driven from one I of the locomotive axles bythe belt m.

I am aware that by the condensation of the exhaust the forceddraughtobtained by means of the exhaust blast-pipe will be lost. Toovercome this I propose to employ a fan n arranged-to discharge air to anozzle'ov situated in'the smoke-box and to induce the draught by thismeans in a similar manner to the exhaust blast. This arrangement wouldnot require the passing of the hot gases from" the furnace through theblastv fan which would be situated in some convenient position,preferablyat the front of.

the locomotive and operate by the spindle Z 1 Steam driven reciprocatingvacuum pumps of wet type are employed, such pumps comprising two'units peach servmg one section of the condenser.

Ialso propose to arrange an 'escapepipe Y 1" from each pipe 71 to theair blast-pipe o for the exhaust steam from each cylinder underthe-control of an. automatic relief valve 8 as usually fitted inconjunction with 4 condensing steam engines, or alternatively under thecontrol of the driver, in the latter case a water sealed relief-valvebeing fitted at the top of the condenser. With this arrange ment thefailure o'f-any portion of the proposed condensing system would notinvolve the stoppage of the engine, which, would continue tooperatenon-condensing, the res-- ervoir of water forming part of thecooling apparatus in the tender being thenutilized for feed purposes,not being required under.

these conditions for circulating throughthe condenser.

By the use of this apparatus it will be possible to cool continuouslyfrom the condenser outlet temperature to some suitable lower temperaturea sufficient quantity of I circulating water to maintain a satisfactoryvacuum in the condenser.

Claims. I

1.- In a condensing system for locomotives, the combination with thecondenser of a water cooler'comprising a closed chamber the sidesand-ends of which are formed by the sides and ends of the tender, inletand outlet o enings in the saidends f r ther drum, means for inducing anair draught through the cooling apparatus, a centrifugal Watercirculating pump, and a blast fan external to the locomotive smoke-box,driven from the axle, the fan delivering air only to a blast pipe in thesmoke-box in order to induce the necessary blast through the furnace andtubes, substantially as hereinbefore described.

cyan; EUSTAGE I SAYER.

